tdesktop/Telegram/SourceFiles/mtproto/special_config_request.h

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/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
#pragma once
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#include "base/bytes.h"
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namespace MTP {
struct ServiceWebRequest {
ServiceWebRequest(not_null<QNetworkReply*> reply);
ServiceWebRequest(ServiceWebRequest &&other);
ServiceWebRequest &operator=(ServiceWebRequest &&other);
~ServiceWebRequest();
void destroy();
QPointer<QNetworkReply> reply;
};
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class SpecialConfigRequest : public QObject {
public:
SpecialConfigRequest(
Fn<void(
DcId dcId,
const std::string &ip,
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int port,
bytes::const_span secret)> callback,
const QString &phone);
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private:
enum class Type {
App,
Dns,
};
struct Attempt {
Type type;
QString domain;
};
void sendNextRequest();
void performRequest(const Attempt &attempt);
void requestFinished(Type type, not_null<QNetworkReply*> reply);
QByteArray finalizeRequest(not_null<QNetworkReply*> reply);
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void handleResponse(const QByteArray &bytes);
bool decryptSimpleConfig(const QByteArray &bytes);
Fn<void(
DcId dcId,
const std::string &ip,
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int port,
bytes::const_span secret)> _callback;
QString _phone;
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MTPhelp_ConfigSimple _simpleConfig;
QNetworkAccessManager _manager;
std::vector<Attempt> _attempts;
std::vector<ServiceWebRequest> _requests;
};
class DomainResolver : public QObject {
public:
DomainResolver(Fn<void(
const QString &domain,
const QStringList &ips,
TimeMs expireAt)> callback);
void resolve(const QString &domain);
private:
struct AttemptKey {
QString domain;
bool ipv6 = false;
inline bool operator<(const AttemptKey &other) const {
return (domain < other.domain)
|| (domain == other.domain && !ipv6 && other.ipv6);
}
inline bool operator==(const AttemptKey &other) const {
return (domain == other.domain) && (ipv6 == other.ipv6);
}
};
struct CacheEntry {
QStringList ips;
TimeMs expireAt = 0;
};
void resolve(const AttemptKey &key);
void sendNextRequest(const AttemptKey &key);
void performRequest(const AttemptKey &key, const QString &host);
void checkExpireAndPushResult(const QString &domain);
void requestFinished(
const AttemptKey &key,
not_null<QNetworkReply*> reply);
QByteArray finalizeRequest(
const AttemptKey &key,
not_null<QNetworkReply*> reply);
Fn<void(
const QString &domain,
const QStringList &ips,
TimeMs expireAt)> _callback;
QNetworkAccessManager _manager;
std::map<AttemptKey, std::vector<QString>> _attempts;
std::map<AttemptKey, std::vector<ServiceWebRequest>> _requests;
std::map<AttemptKey, CacheEntry> _cache;
TimeMs _lastTimestamp = 0;
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};
} // namespace MTP